口金【くちがねkuchigane】(metal) cap; clasp; mouthpiece; socket (for light, etc.)口切り【くちきりkuchikiri】start broaching (a subject); event at the start of the tenth month of the lunar calendar; opening a sealed jar or container序の口【じょのくちjonokuchi】this is only the beginning (the real work having yet to begin); lowest division